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nedfon.com screenshot

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    22% of websites

nedfon.com

室内通风系统，新风系统专卖，建筑通风系统专卖_绿岛风官网

Page Load Speed

15.8 sec in total

First Response

3.8 sec

Resources Loaded

11.9 sec

Page Rendered

136 ms

nedfon.com screenshot

About Website

Click here to check amazing Nedfon content for China. Otherwise, check out these important facts you probably never knew about nedfon.com

绿岛风一直致力于室内通风系统的研发、生产及销售，产品覆盖新风系统,换气扇，风幕机及通风机，建筑通风系统，壁挂通风机，排气扇，混流风机。致力于打造中国室内通风系统专业品牌。

Visit nedfon.com

Key Findings

We analyzed Nedfon.com page load time and found that the first response time was 3.8 sec and then it took 12 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

nedfon.com performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

53/100

10%

LCP (Largest Contentful Paint)

Value7.8 s

3/100

25%

SI (Speed Index)

Value8.4 s

18/100

10%

TBT (Total Blocking Time)

Value320 ms

77/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value8.2 s

41/100

10%

Network Requests Diagram

nedfon.com

3796 ms

index.css

888 ms

AC_RunActiveContent.js

1146 ms

stat.php

1884 ms

iplookup.php

2312 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 64% of them (29 requests) were addressed to the original Nedfon.com, 7% (3 requests) were made to Hm.baidu.com and 2% (1 request) were made to S9.cnzz.com. The less responsive or slowest element that took the longest time to load (3.8 sec) belongs to the original domain Nedfon.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 42.2 kB (62%)

Content Size

68.1 kB

After Optimization

25.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nedfon.com main page is 68.1 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. Only 10% of websites need less resources to load. HTML takes 21.8 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 17.1 kB

  • Original 21.8 kB
  • After minification 19.8 kB
  • After compression 4.6 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 17.1 kB or 79% of the original size.

Image Optimization

-34%

Potential reduce by 7.2 kB

  • Original 21.3 kB
  • After minification 14.1 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Nedfon needs image optimization as it can save up to 7.2 kB or 34% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-70%

Potential reduce by 14.9 kB

  • Original 21.2 kB
  • After minification 18.1 kB
  • After compression 6.3 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 14.9 kB or 70% of the original size.

CSS Optimization

-77%

Potential reduce by 2.9 kB

  • Original 3.8 kB
  • After minification 3.2 kB
  • After compression 872 B

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Nedfon.com needs all CSS files to be minified and compressed as it can save up to 2.9 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (88%)

Requests Now

42

After Optimization

5

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nedfon. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

nedfon.com

nedfon.com

3796 ms

index.css

index.css

888 ms

AC_RunActiveContent.js

AC_RunActiveContent.js

1146 ms

stat.php

stat.php

1884 ms

iplookup.php

iplookup.php

2312 ms

88.js

88.js

1933 ms

a.html

a.html

2259 ms

index.gif

index.gif

227 ms

biao13.gif

biao13.gif

239 ms

muen_1.gif

muen_1.gif

674 ms

muen_2.gif

muen_2.gif

455 ms

muen_3.gif

muen_3.gif

701 ms

muen_4.gif

muen_4.gif

701 ms

muen_5.gif

muen_5.gif

709 ms

muen_6.gif

muen_6.gif

477 ms

muen_7.gif

muen_7.gif

678 ms

muen_8.gif

muen_8.gif

714 ms

muen_9.gif

muen_9.gif

896 ms

biao10.gif

biao10.gif

908 ms

20.png

20.png

3732 ms

19.png

19.png

3322 ms

16.jpg

16.jpg

1664 ms

18.png

18.png

1897 ms

15.jpg

15.jpg

1559 ms

denglu.jpg

denglu.jpg

1132 ms

zhuce.jpg

zhuce.jpg

1356 ms

foot_QQ_1.gif

foot_QQ_1.gif

1583 ms

foot_QQ_2.gif

foot_QQ_2.gif

1783 ms

foot_zifu.gif

foot_zifu.gif

1811 ms

_tt.gif

_tt.gif

848 ms

menu_1.png

menu_1.png

1893 ms

news.jpg

news.jpg

2002 ms

login.jpg

login.jpg

2254 ms

foot_bj.gif

foot_bj.gif

2109 ms

stat.htm

stat.htm

166 ms

core.php

core.php

1261 ms

17582361.js

17582361.js

929 ms

9.gif

9.gif

652 ms

pic.gif

pic.gif

1174 ms

h.js

h.js

768 ms

icon_0.gif

icon_0.gif

896 ms

app.gif

app.gif

1320 ms

b.js

b.js

587 ms

hm.gif

hm.gif

395 ms

bw.js

bw.js

3599 ms

Accessibility Review

nedfon.com accessibility score

68

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

nedfon.com best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

nedfon.com SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nedfon.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Nedfon.com main page’s claimed encoding is gb2312. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

nedfon.com

Open Graph description is not detected on the main page of Nedfon. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: